Less Than You Think

The amount of water on Earth hasn't ever really changed.

Since the atmosphere and oceans formed,
the volume of water on our planet has remained relatively constant.

That limited amount of water is what sustains all of us, and
NASA's prediction for the next 100 years is for both drought and flooding conditions to worsen
across the globe, with water scarcity become more severe globablly.

How much water is really available?
If shortages are a problem, what can be done?
As an individual, what kind of impact can any of us make?

It actually takes less than you would think...

1,386,000,000 km3

The total amount of water on Earth.

That's enough to fill over 535 TRILLION Olympic-sized swimming pools.

96.5% is ocean water

Only 2.5% is freshwater

1.3% of freshwater is
available as surface water

The majority of freshwater is frozen or underground.


Glaciers and ice caps



Only 20% of that surface water is accessible in
rivers and lakes.

This represents 0.007% of the total water on Earth,

and it supplies 77% of the world's water use.

The United States uses...

united states vector

410,000 million gallons per day.

Individually, American's use 78 gallons per day.


That's equivalent to 624 bottles of water.

your water use and savings

Can you make it?

U.N. Min Recommended

Your Results

You chose to save gallons a day.

Way to go!

You can do better than that. Go back and try again!

If all the adults in the U.S. did the same, we could save:


How much can you save?

Change Habits

Update Appliances.

Other Ways to Save

Thanks for visiting the Water Challenge! We recommend viewing this site on a desktop browser for the best experience.
best websites of the world